Asphalt-cutter attachment for steam-rollers.



C. J. SCHULZ. ASPHALT CUTTER ATTACHMENT FOR STEAM ROL LERS. APPLICATION men nan 23. 1914.

' Patented Sept. 7, 1915.

2 SHEETSSHEET I.

WITNESSES: INVE/VTOR Carl J. Schulz L! M T 7 NW A TTORIVEY C. J. SCHULZ.

ASPHALT CUTTER ATTACHMENT FOR STEAM ROLLERS.

' APPLICATION FILED DEC.23. I914.

Patented Sept. 7, 1915.

2 SHEETS-SHEET 2 IIVVE/VTOR Carl J Schulz mom/Er cam. J. SCHULZ, or NEW YORK, N. Y.

ASPHALT-CUTTER ATTACHMENT FOR STEAM-ROLLERS.

Specification of Letters Patent.

Patented Sept. '7, 1915.

Application filed December 23, 1914. Serial No. 878,737.

' To all whom it may concern Be it known that I, CARL J. Sorrow, a Citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Asphalt-Cutter Attachment for Steam-Rollers, of which the following is a full, clear, and exact description.

1 This invention relates to steam rollers for usein laying or repairing asphalt pavements, and it deals more particularly with an attachment for the small or steering roller of the machine, whereby such roller can be converted for use as a cutter, as where strips of the asphalt pavement must be cut out for allowing trenches to be dug for pipes and the like, or for repairing the pavement or for use as a roller in smoothing and compressing asphalt in repairing or laying a pavement.

The invention has for its general objects to .provide a comparatively simple, reliable and effective steering roller for steam rolling machines wherein the two sections of the roller are suitably spaced apart to receive between them a frameor carrier which holds a rotary cutter and a small roller, either of which can be brought to a position at the bottom of the main roller by the proper adjustment of the carrier or frame, so that when the cutter is at the bottom of the main roller the asphalt pavement can be cut deep enough to allow the surface layer of the pavement to be pried up, and so that when the small roller is at the bottom of the main roller the gap between the sections of the main roller will be filled, and consequently a surface of soft asphalt can be rolled and pressed without the leaving of a ridge, as

would otherwise be the case if the gap between the sections of the main roller were not filled.

A further object of the invention is the provision of means whereby the frame or carrier for the cutter and gap-filling roller can be moved to any one of three positions 'by the driver of the steam roller machine through suitable mechanism conveniently within reach, the three positions being that in which the cutter is in use, that in which .the gap-filled roller is in use, and a neutral position where neither the roller nor the cutter is in use.

With these objects 1n view, and others which will appear as the descrlptlon proceeds, the invention comprises various novel features of construction and arrangement of parts which will be set forth with particularity in the following description and claims appended hereto.

In the accompanying drawings, which illustrate one embodiment of the invention and wherein similar characters of reference indicate corresponding parts in all the views, Figure 1 is a sectional view of the steering roller of a steam roller machine showing the attachment in side elevation and in a-position where the cutter is in operation; Fig. 2 is a front view of the steering roller with the attachment shown in section on the line 2-2, Fig. 1, and the rotary cutter in the operation of cutting asphalt; Fig. 3 is a sectional view on the line 3-3, Fig. 1, through the gap-filling roller; Fig. 4 is a side view of the attachment removed; and Fig. 5 is a plan view of the lock. for holding the attachment in position where the gap-filling roller is in use.

Referring to the drawing, A designates the steering roller which is made in two sections 1 and 1 mounted on an axle 2 which is in the usual manner supported by the vertical arms 3 of the steering yoke 41, such yoke having the usual king pin 5 connected with the frame B of the steam roller machine.

The sections 1 and 1 of the steering'roller are separated several inches so as to accommodate the attachment C. This attachment comprises a frame or carrier 6 which has a hub 7 through which extends the axle 2, so that the carrier will be pivotally supported on the latter. This frame is provided with chambers 8 to receive the rotary cutter 9 and the gap closing roller 10. The cutter 9 and roller 10 are arranged in a common plane extending transversely of the axle, and by adjusting the carrier 6 either the cutter or roller can be brought into contact with the asphalt pavement.

The cutter 9 comprises an axle 11 journaled in boxes 12 which are disposed in recesses 13 in the side walls 14 of the chamber 8. These bearing boxes 12 are rigidly secured in position by set-screws 15 or equivalent means. On the cutter axle 11 is an annular flange 16 against which the cutting wheel or ring 17 is clamped by a nut 18 screwed on the axle, and on this flange 16 are pins 19 that engage in openings 20 of the cutter ring 17 so that the latter will turn with the axle 11. The periphery of the ring 17 is sharpened so as to penetrate and cut the asphalt surface, as shown in Figs. 1 and 2, the depth of penetration be ing such that the surface asphalt will be cut through to the pavement foundation, whereby the asphalt can be pried up in the usual way. It will thus be seen that the cutter when in operation does away with the use of the usual picks or axes.

The roller 10 has a periphery of such width that it closes the gap between the sections 1 and 1 of the steering roller, as clearly shown in Fig. 3, and when this gapfilling roller is in operative position its periphery will be in alinement with the bottom of the sections 1 and 1, whereby the steering roller and the gap-filling roller will cooperate to form a continuous roller sur face for enabling soft asphalt to be rolled and pressed. The; axle 21 of the roller 10 is set in bearings22 that are disposed in openings 23 in the sides of the carrier 6.

' Any suitable means may be employed to adjust the carrier 6 to bring either the cutter or gap-closing roller into operative position or to a neutral position. In the present instance the frame 6 is provided with a stub or stem 24 which has connected thereto at 25 the lowerend of a rack bar 26, which latter extends upwardly to the steering arm B and meshes with a pinion 27 secured to a shaft 28 that has an operating wheel 29. By turning this wheel the carrier 6 can be adjusted to'difierent positions. When the cutter 9 is in use the parts will occupy the fu1l-line position shown in Fig. 1, and in order to resist the thrust produced on the cutter carrier during the use of the cutter, the cutter carrier has an arm 6 which engages against the steering roller yoke 4: when the axis of the cutter 9 is vertically below the axle of the steering roller. The steering roller and the cutter rotate anticlockwise, as indicated by the arrows. Since the sections of the rollers are a considerable distance apart the operator while guiding the machine can look down to the pavement through the space between the sections of the steering roller and thereby guide the machine so that the cutter 9 will follow along the line where a cut is to be made.

When the machine is-to be moved over a part of the pavement not to be cut, the operator turns the wheel 29 so as to move the carrier 6 to a neutral position, as indicated by the light broken lines. If, however, the machine is to be used for rolling soft asphalt, the carrier 6 is adjusted to the heavy. broken-line position where the gapfilling roller 10 will be directly below the axle 2. Holding means are employed for rigidlyholding the carrier in either the light or heavy broken-line position. This holding means comprises a forked bracket 30 secured to the steering yoke 4, and inserted in openings 31 is a wedge 32, and on the carrier 6 is a hook-shaped catch 33 pivoted at 3% and having a free or hooked end 35 which is adapted to extend into the fork 30 and engage the wedge 32. When the carrier is in a position to render the gapclosing roller 10 operative, the stern 2 k en-' for adjusting the carrier 6 in place of using the rack bar and pinion operating means.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, together with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrativeand that such changes may be made when desired as are within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. An asphalt pavement roller comprising two roller sections, an axle on which the sections are spaced apart, and a rotary cut ter carried by the axle and spaced between the roller sections and having an annular cutting blade extending below the bottom of the roller sections, the axis of the cutter being eccentric to the axle.

2. An asphalt pavement roller comprising two roller sections, an axle on which the sections are spaced apart, a rotary cutter carried by the axle and spaced between the roller sections and having an annular cutting blade extending below the bottom of the roller sections, a yoke in which the axle is mounted, and means engageable with the yoke for holding the cutter in operative or lnoperative position.

3. The combination of a roller, an axle therefor, a frame or yoke carrying the axle,

a carrier pivotally mounted on the axle, a

rotary cutter mounted on the carrier and having a cutting blade projectin below the bottom of the roller, and means or holding the carrier in a position with the cutter in operative or inoperative relation to the roller.

4. The combination of a roller consisting of two sections spaced apart, an axle for the sections, a carrier loosely mounted on the axle, a rotary cutter mounted on the carrier and having its axis eccentric to the axle and adapted to be thrown by the carrier to or from the bottom of the roller, and a gapclosing roller mounted on the carrier for forming with the bottoms of. the roller sec tions a continuous roller surface. a

5. The combination of a roller divided into two sections, a carrier movably mounted between the sections, a rotary cutter mounted on the carrier, a ap-closing roller mounted on the carrier, an means for holding the carrier in a position with either the gap-closing roller or cutter in operative relation with the roller sections. I

6. A roller comprising two' sections, an axle onwhich the sectionsare spread apart, a yoke for the axle, a carrier pivotally. mounted on'the axle and disposed between t the roller sections,'a rotary cutter mounted on the carrier, a gap-closing roller on the carrier, means on the carrier for engaging the yoke when the cutter is directly below the axle, means for fastening the carrier withrespect to the. yoke when the'gap-closing roller is directly below the axle, and means for holding the carrier in a position where neither the cutter nor gap-closing roller is directly below the axle.- v 7 In a steam roller machine, the combination of a frame, a steering yoke, .an axle thereon, rollersectionsspaced apart on the axle, a carrier pivotally mounted on the axle and disposed between the roller sec-' tions, means on the frame in connectionwith the carrier for adjusting the position of the latter, and a plurality'of devices mounted on the carrier for acting on the-surface over which the roller sections run.

8. In a steam roller machine, the combination of a frame, a steering yoke. an axle rectly under the axle, a gap-closing roller mounted on the carrier, and a locking despect to the yoke when the gap-closing roller is, 1in operative position directly below the ax e.

9. In a steam roller machine, the combination of a frame, a steering yoke, an axle thereon, roller sections spaced apart on the axle, a carrier pivotally mounted on the axle means on the frame and connected with the carrier for adjusting the position of the latter, a rotary butter on the carrier, an arm" on the carrier for engaging the yoke when the cutter isin operative'position directly under the axle, a gap-closing roller mounted on the carrier, a locking device for locking the carrier fixed-with respectto the yoke when 'vice for locking the carrier fixed with reand disposed between the roller sections,

the gap-closing roller is in operative position directlybelow the axle, a catch on the carrier, and means'on the yoke with which the catch engages for holding the carrier in a position with the cutter and gap-closing roller inoperative.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' CARL J. SGHULZ; Witnesses? C. BRADWAY,

PHILIP D. Remus. 

